Current behavior: 
Some file types have the option to enable segmentation in the file import settings, for example Segment XML, Segment XLIFF, etc. When segmentation is enabled, there is no visual indicator in the editors that segments belong to the same element. 

Available workaround: 
Check that the context key is the same for all the segments which have been segmented from the same element. 

Requested behavior: 
Add a visual indicator to show that segments belong to the same element. For example, applying the same background color to the segment number. 

Use case:
This would be particularly useful in CJK languages, affected by spacing at the end of a segment.